What is a synonym for thesis?

Here are some synonyms for "thesis," depending on the context:

Formal:

* Dissertation (for a long, academic work)

* Dissertation (for a long, academic work)

* Argument

* Proposition

* Claim

* Assertion

* Theory

* Hypothesis

* Discourse

Informal:

* Main point

* Main idea

* Argument

* Point of view

* Stand

The best synonym will depend on the specific context of your writing.